This has now been going on for 15, 000 to 18, 000 years, a life-friendly period known as an interglacial cycle.

现在已持续了15000到18000年，这个有利于生命的阶段也称之为间冰周期。

youdao

Human effects on the climate notwithstanding, the cycle will continue to turn, the interglacial will some day come to an end - and the ice sheets will descend again.

人类对于气候有一定影响，但循环将会继续下去，总有一天间冰期将会结束，到那时冰层又将卷土重来。

youdao

Human effects on the climate notwithstanding, the cycle will continue to turn, the interglacial will some day come to an end - and the ice sheets will descend again.

人类对于气候有一定影响，但循环将会继续下去，总有一天间冰期将会结束，到那时冰层又将卷土重来。

youdao